Number 186 (Story #2), July 5, 1994 by Phillip F. Schewe and Ben Stein THE EVIDENCE FOR TOP QUARK PRODUCTION , announced by the Collider Detector at Fermilab (CDF) collaboration in April, is now officially published in Physical Review Letters (PRL). An abbreviated form of a much longer article that will appear later in the journal Physical Review D, the PRL account does not much add to the salient facts established in April, namely the observation of 12 events consistent with top production, with an estimated cross section of 13.9 picobarns and an estimated top mass (based on analysis of 7 of the 12 events) of 174 GeV. (F. Abe et al., Phys. Rev. Lett., 11 July.)